Richill Wastewater Treatment Plant, Armagh, Northern Ireland

Richill wastewater treatment plant is located near Armagh in County Armagh, Northern Ireland, serving a population of approximately 3,267. The plant provides secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive for agglomerations of this size. It operates within the regulatory framework of the United Kingdom, which transposes EU directives into national law. The plant has a designed capacity of 4,914.00 and treats an annual wastewater discharge volume of 727.35 megaliters. As a secondary treatment facility, it removes organic matter and suspended solids, ensuring that effluent meets quality standards before discharge. The plant's capacity utilization appears moderate, allowing for future growth or seasonal variations. The treated effluent is discharged into local watercourses that drain into the Irish Sea via the River Bann system. The surrounding area includes agricultural land and small settlements, making the plant important for protecting local water quality and downstream ecosystems. The receiving waters support diverse aquatic life and are used for recreation and fishing.

Richill plant discharges into local streams that flow into the River Bann, which ultimately reaches the Irish Sea. The catchment area includes agricultural runoff and rural settlements, so the plant's secondary treatment helps reduce nutrient loading and organic pollution. The downstream environment supports salmonid fisheries and other sensitive species, making effective wastewater treatment crucial for maintaining ecological health.